Tech Specs

Product Specfications

Mac and Windows Logos

Compatibility

Mac Compatibility

  • Mac (M series Pro/Max/Ultra and M4)
  • Mac Studio additionally supports four or six (M2 Ultra) displays with two or three Sonnet Thunderbolt Dual 4K HDMI 2.1 Adapters, respectively
  • Mac (Intel) with Thunderbolt 3 ports
  • Mac (Intel) with four Thunderbolt 3 ports (except Mac mini) additionally supports four 4K monitors with two Sonnet adapters
  • Basic M1/M2/M3 series Macs are not compatible (see Sonnet's DisplayLink adapters for dual monitor support)
  • macOS 10.12.6+
  • macOS Sequoia compatible

Windows Compatibility

  • Windows computer with Thunderbolt 5, 4, or 3 ports; or USB4 port(1)
  • Windows 11 and 10

Monitor Compatibility

  • EDID Version 1.4

Application Compatibility

  • Suitable for all applications

Hardware

Part Number

  • TB3-DHDMI-21

Warranty

  • 2-year

Form Factor

  • Display adapter

Bus Interface

  • 40Gbps Thunderbolt

External Connectors

  • Two HDMI
  • Thunderbolt captive cable

Standards

  • HDMI 2.1
  • HDCP 2.2

Maximum Resolutions

  • macOS: Two 4K (3840 x 2160 @ 60Hz)(2)
  • Windows: Two 4K (3840 x 2160 @ 120Hz); or one 8K (7680 x 4320 @ 60Hz)

Dimensions (WxDxH)

  • 2.4 x 4.4 x 0.6 in. (60 x 113 x 15 mm)

Compliance

  • RoHS 3 (Directive 2015/863)
  • IEC62368-1 and IEC62368-2 Safety

Package Contents

  • Thunderbolt Dual 4K HDMI 2.1 Adapter (with captive 7.9-inch [20cm] Thunderbolt cable)
  • Documentation
Thunderbolt Dual HDMI 2.1 Adapter Packaging

Support Links

Support Knowledge Base

Thunderbolt Dual 4K HDMI 2.1 Adapter Support

Product Manual

Thunderbolt Dual HDMI Adapter Manual PDF Download Link

Technical Notes

  • Not compatible with USB-C only ports. All Windows Thunderbolt 4 and 5 computers support two 4K monitors. Thunderbolt 3 and USB4 computers support two displays. Check the specifications for your computer for exceptions.
  • macOS currently supports HDMI displays only up to 4K 60Hz via Thunderbolt docks and adapters. Apple may add support for higher resolutions and/or frame rates at a later date.

Videos & Reviews

Thunderbolt Dual 4K HDMI 2.1 Adapter